/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
virtual void TriggerOnQueryPartyJoinabilityReceivedDelegates ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & Param1, const [FOnlinePartyId](API\Plugins\OnlineSubsystem\FOnlinePartyId) & Param2, const [IOnlinePartyPendingJoinRequestInfo](API\Plugins\OnlineSubsystem\Interfaces\IOnlinePartyPendingJoinRequestIn-_2) & Param3 )